From 249866e3d1e11dc72eaa1305f4bb479ded92ef38 Mon Sep 17 00:00:00 2001
From: Jannis Hoffmann <jannis@fehcom.de>
Date: Tue, 9 Jul 2024 13:58:20 +0200
Subject: reorganized file structure

Moved c files into src/.
Corrected VERSION file.
Removed BUILD and FILES.
---
 dnsstub/dns_rcrw.c | 141 -----------------------------------------------------
 1 file changed, 141 deletions(-)
 delete mode 100644 dnsstub/dns_rcrw.c

(limited to 'dnsstub/dns_rcrw.c')

diff --git a/dnsstub/dns_rcrw.c b/dnsstub/dns_rcrw.c
deleted file mode 100644
index 4633fed..0000000
--- a/dnsstub/dns_rcrw.c
+++ /dev/null
@@ -1,141 +0,0 @@
-#include <unistd.h>
-#include "taia.h"
-#include "env.h"
-#include "byte.h"
-#include "str.h"
-#include "readclose.h"
-#include "dnsresolv.h"
-
-/**
-	@file dns_rcrw.c
-	@author djb
-	@source ucspi-tcp
-	@brief DNS receive rewrite
-*/
-
-static stralloc data = {0};
-
-static int init(stralloc *rules)
-{
-  char host[256];
-  const char *x;
-  int i;
-  int j;
-  int k;
-
-  if (!stralloc_copys(rules,"")) return DNS_MEM;
-
-  x = env_get("DNSREWRITEFILE");
-  if (!x) x = "/etc/dnsrewrite";
-
-  i = openreadclose(x,&data,64);
-  if (i == -1) return DNS_INT;
-
-  if (i) {
-    if (!stralloc_append(&data,"\n")) return DNS_MEM;
-    i = 0;
-    for (j = 0; j < data.len; ++j)
-      if (data.s[j] == '\n') {
-        if (!stralloc_catb(rules,data.s + i,j - i)) return DNS_MEM;
-        while (rules->len) {
-          if (rules->s[rules->len - 1] != ' ')
-          if (rules->s[rules->len - 1] != '\t')
-          if (rules->s[rules->len - 1] != '\r')
-            break;
-          --rules->len;
-        }
-        if (!stralloc_0(rules)) return DNS_MEM;
-        i = j + 1;
-      }
-    return 0;
-  }
-
-  x = env_get("LOCALDOMAIN");
-  if (x) {
-    if (!stralloc_copys(&data,x)) return DNS_MEM;
-    if (!stralloc_append(&data," ")) return DNS_MEM;
-    if (!stralloc_copys(rules,"?:")) return DNS_MEM;
-    i = 0;
-    for (j = 0; j < data.len; ++j)
-      if (data.s[j] == ' ') {
-        if (!stralloc_cats(rules,"+.")) return DNS_MEM;
-        if (!stralloc_catb(rules,data.s + i,j - i)) return DNS_MEM;
-        i = j + 1;
-      }
-    if (!stralloc_0(rules)) return DNS_MEM;
-    if (!stralloc_cats(rules,"*.:")) return DNS_MEM;
-    if (!stralloc_0(rules)) return DNS_MEM;
-    return 0;
-  }
-
-  i = openreadclose("/etc/resolv.conf",&data,64);
-  if (i == -1) return DNS_INT;
-
-  if (i) {
-    if (!stralloc_append(&data,"\n")) return DNS_MEM;
-    i = 0;
-    for (j = 0; j < data.len; ++j)
-      if (data.s[j] == '\n') {
-        if (byte_equal("search ",7,data.s + i) || 
-            byte_equal("search\t",7,data.s + i) || 
-            byte_equal("domain ",7,data.s + i) || 
-            byte_equal("domain\t",7,data.s + i)) {
-          if (!stralloc_copys(rules,"?:")) return DNS_MEM;
-          i += 7;
-          while (i < j) {
-            k = byte_chr(data.s + i,j - i,' ');
-            k = byte_chr(data.s + i,k,'\t');
-            if (!k) { ++i; continue; }
-            if (!stralloc_cats(rules,"+.")) return DNS_MEM;
-            if (!stralloc_catb(rules,data.s + i,k)) return DNS_MEM;
-            i += k;
-          }
-          if (!stralloc_0(rules)) return DNS_MEM;
-          if (!stralloc_cats(rules,"*.:")) return DNS_MEM;
-          if (!stralloc_0(rules)) return DNS_MEM;
-          return 0;
-        }
-        i = j + 1;
-      }
-  }
-
-  host[0] = 0;
-  if (gethostname(host,sizeof(host)) == -1) return DNS_ERR;
-  host[(sizeof(host)) - 1] = 0;
-  i = str_chr(host,'.');
-  if (host[i]) {
-    if (!stralloc_copys(rules,"?:")) return DNS_MEM;
-    if (!stralloc_cats(rules,host + i)) return DNS_MEM;
-    if (!stralloc_0(rules)) return DNS_MEM;
-  }
-  if (!stralloc_cats(rules,"*.:")) return DNS_MEM;
-  if (!stralloc_0(rules)) return DNS_MEM;
-
-  return 0;
-}
-
-static int ok = 0;
-static unsigned int uses;
-static struct taia deadline;
-static stralloc rules = {0}; /* defined if ok */
-
-int dns_resolvconfrewrite(stralloc *out)
-{
-  struct taia now;
-
-  taia_now(&now);
-  if (taia_less(&deadline,&now)) ok = 0;
-  if (!uses) ok = 0;
-
-  if (!ok) {
-    if (init(&rules) < 0) return DNS_INT;
-    taia_uint(&deadline,600);
-    taia_add(&deadline,&now,&deadline);
-    uses = 10000;
-    ok = 1;
-  }
-
-  --uses;
-  if (!stralloc_copy(out,&rules)) return DNS_MEM;
-  return 0;
-}
-- 
cgit v1.2.3